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Friday, Nov 20, 2009

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Most Emailed Photos - Science

In this photo provided by Purina, terriers are seen competing in the Jack Russell Hurdle Race during the Purina Incredible Dog Challenge at Purina Farms in Gray Summit, Mo. on Saturday, Oct. 3, 2009. (AP Photo/Purina, Whitney Curtis)

AP Sent: 8 times

In this image provided by Purina, Al Erikson and George, a Rat Terrier, from San Diego, Calif., compete in the freestyle flying disc competition of the Purina Incredible Dog Challenge at Purina Farms in Gray Summit, Mo. on Saturday, Oct. 3, 2009. (AP Photo/Purina, Whitney Curtis)

AP Sent: 8 times

In this image provided by Purina, Henry, a Chesapeake Bay Retriever, and his trainer Perry Collier of Escondido, Calif., compete in the diving dog competition of the Purina Incredible Dog Challenge at Purina Farms in Gray Summit, Mo. on Saturday, Oct. 3, 2009. Henry placed second in the event. (AP Photo/Purina, Whitney Curtis)

AP Sent: 7 times

A visitor looks at a reconstructed biological model of a 'Quetzalcoatlus northropi' at the 'Pterosaurs; Rulers of the Skies in the Age of Dinosaurs' exhibition at The National Museum of Emerging Science and Innovation in Tokyo, in this June 28, 2008 file photo.(AP Photo/Itsuo Inouye)

AP Sent: 3 times

A clutch of recovered fossilized dinosaur eggs are displayed by U.S. Immigration and Customs Enforcement during a news conference in Los Angeles in this March 15, 2006 file photo. (AP Photo/Nick Ut)

AP Sent: 3 times

AP Sent: 1 times

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